Machine for mixing concrete ingredients or other substances



F. W..KIDD|E. MACHINE roe MIXING CQNCBETE INGREDIENTS OR OTHER SUBSTANCES.

APPLICATION FlLED MAY 27. I919.

Patented June 13, 1922.

B SHEETS SHEET l.

. F. W. KIDDIE. MACHINE FOR MIXING CONCRETE INGREDIENTS OR OTHER SUBSTANCES.

APPLICATION FILED MAY 27. I919.

Patented June 13, 1922.

'6 SHEETS-SHEET 2.

F. W. KlDDlE.

MACHINE FOR MIXING CONCRETE INGREDIENTS OR OTHER SUBSTANCES.

' APPLICATION FILED MAY 27. 1919.

1,419,737. Patented June 13,1922.

F.- W. KIDDIE.

'MACHINE FOR MIXI-NG CONCRETE INGREDIENTS OR OTHER SUBSTANCES.

APPLICATION FILED MAY-2 1919.

1,419,737, V Patented June 13-, 1922.

a VSHEETS-SHEET 4.

F. W. KIDDIE.

MACHINE FOR MlXlNG CONCRETE INGREDIENTS OR OTHER SUBSTANCES;

APYPLICATION'FILEN MAY 21.1919.

. 419 737 Patentedlune 1 922..

6 SHEETS- T 5.

F. W. KIDDIE.

MACHINE FOR MIXING CONCRETE INGREDIENTS OR OTHER SUBSTANCES.

APPLICATION FILED MAY 27. I9I9.

1,419,737. Patented June 13,1922.

FREDERICK IV. KIDDIE, OF LEAMINGTON, ENGLAND, ASSIGNOR- TO IVINGET LIMITED, OF LON DON, ENGLAND.

MACHINE FOB MIXING CONCRETE INGREDIENTS OR OTHER SUBSTANCES.

Application filed May 27,

To all whom it may concern:

Be it known that I, FREDERICK WEBSTER KIDDIE, citizen of Great Britain, residing at 26 Binswood Avenue, Leamington, in the county of Warwick, England, have invented certain new and useful Improvements Relating to Machines for Mixing Concrete Ingredients or Other Substances, of which the diture of power. My invention therefore has marked advantages both as regards the process and the product.

In order to explain my invention clearly, I will refer hereinafter to the accompanying drawings illustrating my invention, in

which,

Figure 1 is a side elevation of the complete machine.

Figure 2 is a view of one end, and Figure 3 the other end (the engine or motor being omitted).

Figure 4 is an end view showing the movable part of the machine in tilted position (the gear casing being removed).

Figure 5 is a vertical section (on a larger scale) taken longitudinally through the hearing at one end of the machine.

Figure 6 is a section at right angles to F ig. 5, certain parts being omitted.

Figure 7 is a front elevation of the end bearing.

Figures 8 and 9 are a front and side elevation respectively of one of the mixing shovels.

The same numerals repeated in the different figures denote the same or correspond ing parts of the machine.

The machine is of the kind which comprongs 3. There may be, for instance, three Specification ofLettersPatent. P tented; June 13,1922.

1919. Serial No. 300,140.

of such chains 2 arranged parallel and designed after any convenient pattern. The furthest ofsuch chains sags slightly, as sho wn,-and will scrape a definite path along the curved interior of thetrough 4. The

"heaters or ploughs 1, 3, which are mounted radially at intervals along the shaft, will collectively scrape the whole of the internal cylindrical surface at each revolution.

. The shape and position of the fork 3, 3,-

and its shank 1 has an important relation to its effectiveness. This can be best explained by referring to Figure 9 and regarding the beater 1, 3 for the sake of illustration, as a shovel, the blade 3, 3, of which is bent at an angle with its shank 1. The shank 1 is twisted slightly so as to set the edge of the blade (or tips of prongs 3) out of parallel with the shaft 5 (Figs. 1 and 5), and it is also bent back (Fig. 9) in such manner as to bring the centre of such edge (or point between the tips of prongs 3, 3) in radial line with the shank 1. In this way, the necessary sweeping action of the heaters or shovels 1, 3 is obtained. The outer portion of each end fork of the series may be fitted with a chain 6 (Fig. 5) extending to the shaft 5 for sweeping the flat ends of the trough 4. 1

The trough 4 is'capable of being tilted axially for emptying contents, for which purpose, a toothed segment 7 (Fig. 4) is mounted on a hollow trunnion pin 8 secured to the end of the trough by bolts 9 (Figs. 6 and 7). The pin 8, being hollow,

serves as a bearing for one end of the shaft 5. The trunnion pin 8 is supported in a bearing 10. The segment 7 is engaged by another toothed segment 11 hinged upon a pin 13, and carrying a hand lever 12. V

The shaft 5 may be worked by the shaft 17 of an oil engine or other motor (the fly wheels 14 of which only are shown in Fig. 1) mounted upon the carriage frame 15, which carries the whole machine. The frame 15 is provided with wheels 16 for moving the whole from one place to another. The

' coupling between the, shaft 5 and the motorshaft 17, may have slightplay in all directions.

As illustrated in Figure ,1, this coupling comprises a loose disc 18 grooved or ribbed upon both sides, the direction ofthe grooving or ribbing upon one side belng at right angles to. that on the other. For instance,

' the frame to receive anddirect-the material one side of the disc 18 may have a groove (1,

and the other side a rib b, or if preferred,

a and b may both be ribs or both grooves, the disc 18 being situated between the driven member 5 and the driving member 17, both of which are similarly grooved and ribbed.

In this manner, sliding play'can be obtained without impairing the positive driving effect. This is a distinct advantage, owing to the unavoidable resiliency of the frame 15.

'The'trough 4 is surmounted by a hopper 19 (Figs. 1 and 2) furnished at'the bottomwith a slidable door 20, worked by a lever 21'. A water tank 22 may be provided with 15 spraying pipe .23 of any suitable kind for wetting the ingredients in the trough 4 eithenbefore or during the mixing-operation.

, The trunnion bearing .10 (Figs l and 4c) is carried on a standard or upright frame 24 mounted upon the carriage frame 15, and

there is another frame or standard 2? (Figs.

'1 and 8) at the opposite end of the machine to carry the other trunnion member. A stationary delivery chute 25 may be fitted to which becomes tipped outof the trough i when the latter is swung'by means of the hand lever 12 intothe position shown in Figure 4:.

' The segmental tiltlng gear 7, 11 is pro- 77 crete'ingredients or other substances, beat- 'ers mounted upon a shaft, each beater consisting of a single shank carrying a fork, and

having chain form connecting means between the prongs of same, the said shanks being inclined out of the radial lines, in order that the forks and chain form connecting means work the concrete endwise ofthe trough and more perfectly mix the concrete. 2. For use in a machine of the kind specified, a beater having a shank inclined from the radial'line and carrying a fork provided witha chain form connecting means extending from prong to prong thereof, in which beater the prongs are bent at such an angle with the single shank that their tips are practically in the radial line of the same.

3. For the use above specified, a beater consisting of a shank and fork provided with a chain form connecting means from prong to prong and so directed and arranged as to mix the concrete when carried around in revolution, said beater being combined with a shaft and so mounted on the same that the for mixing 0011- suitable distances apart upon a common rotary shaft, with a scraping device extending from the shaft (ateach end) to the-terminal prong for the purpose of sweeping also the ends of said trough.

5. In concrete mixers, the combination "of a rotary shaft having a bore extending from face to face throughsaid shaft and atright angles to the axis thereof and a receptacle in which said shaft rotates, with a beater consisting. of a fastening stem extending through said bore, a shoulder at the base of said stem engaging the face of the adjacentportion of said shaft, a shank extending from said shoulder at an angle to said stem so as to extend, in any-position of adjustment', appreciably to, one side of the radial line passing through the center of said" bore, and a fork carried by the radially outer end of said shank and so formed that the central point of a line drawn from the tips of its prongs will be intersected by a radial line passing through the center of said bore, and flexible meansextending between, and con nected to, the prongs of said fork to operate upon the plastic mass with a sweeping action impelling the mass longitudinally, radially and peripherally, and means working on said stem for securing thesame insaid bore. V

6. A beater to be mounted on the shaft of a rotary concrete mixer. consisting of a stem to be passed through said shaft. a shoulder at the base of said stem, a shank extending from said shoulder at an abrupt angle to said stem, a fork extending from said shank and presented at a reverse angle thereto 'to ward a line coincident with the longitudinal central line of said stem, and a flexible element extending from prong to prong of said fork and connected to said prongs.

7. In a concrete mixer, a trough, a shaft mounted to act upon material in said trough, and means for rotating said shaft, in combination with two series of heaters mounted to turn with said shaft, each beater of one series having an operative portion provided with a flexible element, said portion extending longitudinally of the shaft, but at an angle thereto to give a longitudinal impulse, and lying as a whole in a plane at an inclination to every radial plane to give a radial impulse, the operative portion of each beater of said series lying parallel to the op erative portions of the other beaters of said series, and each beater of the other serles having a similar, operative portion extending longitudinally of the shaft, but at an In testimony whereof, I have signed my angle thereto reverse to the'angle of the first name to this specification in the presence of 10 series, and lying as a Whole in a plane at an tWo suloscribing Witnesses.

inclination to every radial plane to give a FRFDERICK W KIDDIE radial impulse, the operative portion of each x beater of said second series lying parallel Witnesses:

to the operative portions of the other heaters ARTHUR H. STANLEY,

of said series. MARGUERITE L. ROWLEY. 

